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Hatem

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Jul 20, 2015
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an athlete competes in a 100 metre a 200 metre and a 400 metre race and his chances of winning are respectively 1/2 1/3 and 1/4 calculate the probability that

(a) he does not win any of the races

(b) he wins at least two of the races
 
Hatem said:
an athlete competes in a 100 metre a 200 metre and a 400 metre race and his chances of winning are respectively 1/2 1/3 and 1/4 calculate the probability that

(a) he does not win any of the races

(b) he wins at least two of the races
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What are your thoughts? What have you tried? How far have you gotten? Where are you stuck?

Please be complete. Thank you! ;)
 
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